U.S. patent number 8,287,152 [Application Number 12/933,917] was granted by the patent office on 2012-10-16 for lighting apparatus using light emitting diode.
This patent grant is currently assigned to Amoluxe Co., Ltd.. Invention is credited to Jason Jae Gill.
United States Patent |
8,287,152 |
Gill |
October 16, 2012 |
Lighting apparatus using light emitting diode
Abstract
Disclosed is a light apparatus using light emitting diodes that
includes: a base body member having a mounting surface on its one
surface; a plurality of inclined block members each of which is
mounted on the mounting surface of the base body member and has an
inclined surface on one surface thereof; and light emitting diode
module members that are mounted on the inclined surfaces of the
inclined block members. According to the disclosure, it is possible
to easily form various light distributions required for the
lighting design by combining the inclined block members and the
light emitting diode module members that are mounted on the
mounting surfaces of the base body member, and various light
distributions can be formed, which makes it possible to improve
flexibility in the lighting design and to improve lighting
efficiency for an object to be illuminated.
Inventors: |
Gill; Jason Jae (Omaha,
NE) |
Assignee: |
Amoluxe Co., Ltd. (Gyeonggi-do,
KR)
|
Family
ID: |
41114099 |
Appl.
No.: |
12/933,917 |
Filed: |
March 31, 2008 |
PCT
Filed: |
March 31, 2008 |
PCT No.: |
PCT/KR2008/001782 |
371(c)(1),(2),(4) Date: |
September 22, 2010 |
PCT
Pub. No.: |
WO2009/119929 |
PCT
Pub. Date: |
October 01, 2009 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20110026253 A1 |
Feb 3, 2011 |
|
Foreign Application Priority Data
|
|
|
|
|
Mar 24, 2008 [KR] |
|
|
10-2008-0026980 |
|
Current U.S.
Class: |
362/249.02;
362/294; 362/431 |
Current CPC
Class: |
F21V
29/763 (20150115); F21V 19/001 (20130101); F21V
29/76 (20150115); F21V 15/01 (20130101); F21V
29/75 (20150115); F21S 2/005 (20130101); F21Y
2115/10 (20160801); F21Y 2113/00 (20130101); F21Y
2105/10 (20160801); F21W 2131/103 (20130101) |
Current International
Class: |
F21S
8/08 (20060101); F21V 29/00 (20060101) |
Field of
Search: |
;362/294,373,431,249.02,249.06 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
09-147089 |
|
Jun 1997 |
|
JP |
|
2005-181290 |
|
Jul 2005 |
|
JP |
|
2006-156074 |
|
Jun 2006 |
|
JP |
|
2007-173177 |
|
Jul 2007 |
|
JP |
|
2007-187914 |
|
Jul 2007 |
|
JP |
|
1020010012585 |
|
Feb 2001 |
|
KR |
|
Other References
International Search Report: PCT/KR2008/001782. cited by
other.
|
Primary Examiner: Neils; Peggy A.
Attorney, Agent or Firm: Ladas & Parry LLP
Claims
The invention claimed is:
1. A lighting apparatus using light emitting diodes, comprising: a
base body member comprising a mounting portion and a side portion
protruding toward the outer circumference of the mounting portion,
the mounting portion having a pair of horizontal sides and a pair
of vertical sides, which are shorter than the horizontal sides; a
plurality of inclined block members detachably mounted on the
mounting portion inside the base body member, each inclined block
member having inclined surfaces; and light emitting diode module
members that are mounted on the inclined surfaces of the inclined
block members, wherein the inclined block members comprise a pair
of first inclined blocks whose inclined surfaces are opposed to
each other and a pair of second inclined blocks whose inclined
surfaces are opposed to each other, wherein the pair of second
inclined blocks is interposed between the pair of first inclined
blocks.
2. The lighting apparatus using light emitting diodes according to
claim 1, wherein the base body member is formed such that the side
portions facing each other are inclined at a predetermined
angle.
3. The lighting apparatus using light emitting diodes according to
claim 1, wherein the mounting portion of the base body member
comprises a flat mounting portion and inclined mounting portions
which are opposed to each other and provided at both sides of the
flat mounting surface.
4. The lighting apparatus using light emitting diodes according to
claim 1, wherein a heat sink for dissipating heat is provided at an
outer surface of the mounting portion and the side portion of the
base body member.
5. The lighting apparatus using light emitting diodes according to
claim 1, wherein a transparent panel member that covers an inner
part of the base body member, and the transparent panel member
detachably mounted to an upper part of the side portion of the base
body member.
6. The lighting apparatus using light emitting diodes according to
claim 1, wherein each inclined block member has a plurality of
inclined surfaces.
7. The lighting apparatus using light emitting diodes according to
claim 1, wherein each inclined block member has hollow parts.
8. The lighting apparatus using light emitting diodes according to
claim 1, wherein the base body member, the inclined block members,
and the light emitting diode module members are used as a
floodlight.
Description
TECHNICAL FIELD
The present invention relates to a lighting apparatus using light
emitting diodes, and more particularly, to a lighting apparatus
capable of forming various light distribution types using light
emitting diodes as a light source.
BACKGROUND ART
Generally, lighting apparatuses, such as a street light and a
floodlight, have been designed and manufactured to have a proper
light distribution type so that they can efficiently light an
object to be illuminated.
The lighting apparatus is designed such that a high pressure sodium
lamp, a mercury vapor, a metal halide lamp, or a typical electric
bulb, is used as a light source and light from the light source is
reflected from a reflection plate to form a light distribution type
suitable for an object to be illuminated.
In particular, a floodlight has been used widely in many fields of
a building, an advertisement plate, a working site, a stadium, and
a parking lot as well as an advertisement tower. In the floodlight,
a reflection plate having a parabolic shape and a light source are
provided inside a lamp housing.
The floodlight is designed to have a proper light distribution type
in consideration of a distance from an object to be lighted and the
lighting area of the object. The distance between a reflection
plate and a light source, such as a high pressure sodium lamp, a
mercury vapor or a metal halide is adjusted, or the angle and shape
of the reflection plate are adjusted to form a desired light
distribution.
Meanwhile, the lighting apparatus provided with the light source,
such as a high pressure sodium lamp, a mercury vapor or a metal
halide, is able to obtain various light distributions by adjusting
the shape and angle of the reflection plate or reflector. However,
the brightness and diffusion range of many kinds of lamps used as a
light source, such as a high pressure mercury lamp, a fluorescent
lamp, and a sodium lamp are fixed when the lamps are manufactured
initially. Therefore, it is difficult for the user to arbitrarily
adjust the brightness of the diffusion range. In addition, they
have a short life span and high power consumption.
Recently, in consideration of the aforementioned drawbacks, a
lighting apparatus has been proposed which uses LEDs (light
emitting diodes) as a light source. With the development of
technique, light emitting diodes with low power consumption and
high brightness have been developed and come into widespread
use.
However, the light emitting diode has a substantially permanent
life span, as compared to the commonly used/conventional lamps
according to the related art, and the brightness of light emitted
from the light emitting diodes is determined by a combination of
the light emitting diodes. When light distribution is formed by the
reflecting plate, a light distribution area is small, and
brightness is low. In addition, there are limitations in forming
sufficient light distribution to effectively illuminate an object
to be light.
Further, since it is difficult to effectively dissipate heat
generated from a plurality of light emitting diodes, emission
efficiency is lowered due to heat, which results in the damage of
parts.
Furthermore, as shown in FIGS. 1 and 2, for example, most commonly
used floodlights, which use light emitting diodes, are formed in a
circular or rectangular shape, and includes a lamp housing member 1
having a flat lamp mounting surface on the inner surface and light
emitting diode modules 2 which are provided on the flat lamp
mounting surface la behind of the lamp housing member 1.
Therefore, the floodlight according to the related art has a
problem in that it does not form various light distributions, and
thus there are limitations in the installation position of the
floodlight and objects to be illuminated.
DISCLOSURE OF INVENTION
Technical Problem
An object of the invention is to provide a lighting apparatus using
light emitting diodes capable of increasing a light distribution
area and brightness, and forming various light distributions
effective for illuminating the road.
Another object of the invention is to provide a lighting apparatus
using light emitting diodes capable of adjusting freely the
mounting angles of light emitting diode modules to obtain a desired
light distribution, and improving flexibility in the lighting
design.
Technical Solution
According to an aspect of the invention, a lighting apparatus using
light emitting diodes includes: a base body member having a
mounting surface on its one surface; a plurality of inclined block
members each of which is mounted on the mounting surface of the
base body member and has an inclined surface on one surface
thereof; and light emitting diode module members that are mounted
on the inclined surfaces of the inclined block members.
Advantageous Effects
According to the above-mentioned aspect of the invention, it is
possible to form various light distributions, improve flexibility
in the lighting design, and improve lighting efficiency for an
object to be illuminated.
BRIEF DESCRIPTION OF DRAWINGS
FIGS. 1 and 2 are perspective views illustrating floodlights
according to the related art;
FIGS. 3 to 7 are perspective views illustrating embodiments of the
invention;
FIGS. 8 to 11 are cross-sectional views illustrating examples of a
base body member of the invention;
FIGS. 12 and 13 are side views illustrating examples of an inclined
block member of the invention;
FIGS. 14 and 15 are enlarged cross-sectional views illustrating
other examples of the inclined block member of the invention;
FIG. 16 is a schematic view illustrating a light distribution type
typically used in a floodlight;
FIGS. 17 to 19 are views illustrating an example of a floodlight
capable of forming a narrow light distribution;
FIGS. 20 to 22 are views illustrating another example of a
floodlight capable of forming an intermediate light
distribution;
FIGS. 23 to 25 are views illustrating still another example of a
floodlight capable of forming a wide light distribution;
FIGS. 26 and 27 are perspective views illustrating another
floodlight according to the invention;
FIGS. 28 and 29 are views illustrating an example of the floodlight
shown in FIGS. 26 and 27;
FIGS. 30 and 31 are views illustrating another example of the
floodlight shown FIGS. 26 and 27;
FIGS. 32 and 33 are views illustrating still another example of the
floodlight shown FIGS. 26 and 27; and
FIG. 34 is a perspective view illustrating another embodiment of
the invention.
DESCRIPTION OF REFERENCE NUMERALS IN THE DRAWINGS
10: base body member 11: mounting surface 12: side portion 20:
inclined block member 30: light emitting diode module member 40:
transparent panel member
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the preferred embodiments of the invention will be
described in detail referring to the attached drawings.
FIGS. 3 to 7 are perspective views illustrating various embodiments
of the invention.
FIGS. 8 to 11 are cross-sectional views illustrating various
examples of a base body member according to the invention.
FIGS. 12 and 13 are side views illustrating examples of an inclined
block member according to the invention. FIG. 12 is a view
illustrating examples of the inclined block member provided with a
single inclined surface, and FIG. 13 is a view illustrating
examples of the inclined block member provided with a plurality of
inclined surfaces.
FIGS. 14 and 15 are enlarged cross-sectional views illustrating
other examples of the inclined block member, and show examples of
the inclined block member detachably connected to the base body
member. FIG. 14 shows a connection protrusion on the mounting
surface of a housing member, and FIG. 15 shows a connection
protrusion on the lower surface of the inclined block member.
FIG. 16 is a schematic view illustrating light distribution types
typically used in a floodlight, that is, a narrow light
distribution type, an intermediate light distribution type, and a
wide light distribution type.
FIGS. 17 to 19 are views illustrating an example of a floodlight
capable of forming the narrow light distribution as shown in FIG.
16, and show an example of a plurality of inclined members being
mounted to the mounting surface of the base body member having a
rectangular box shape.
FIGS. 20 to 22 are views illustrating an example of a floodlight
capable of forming the intermediate light distribution type as
shown in FIG. 16, and show an example of a plurality of inclined
members being mounted to the mounting surface of the base body
member having a rectangular box shape.
FIGS. 23 to 25 views illustrating an example of a floodlight
capable of forming the wide light distribution type as shown in
FIG. 16, and show an example of a plurality of inclined members
being mounted to the mounting surface of the base body member
having a rectangular box shape.
FIGS. 26 and 27 are perspective views of another floodlight
included in the invention. FIG. 26 is an exploded perspective view,
and FIG. 27 is an assembled view.
FIGS. 28 and 29 are views illustrating an example of the floodlight
shown in FIGS. 26 and 27, and show an example capable of forming
the narrow light distribution type shown in FIG. 16.
FIGS. 30 and 31 are views illustrating another example of the
floodlight shown in FIGS. 26 and 27, and show an example capable of
forming the intermediate light distribution type shown in FIG.
16.
FIGS. 32 and 33 are views illustrating still another example of the
floodlight shown in FIGS. 26 and 27, and show an example capable of
forming the wide light distribution type shown in FIG. 16.
FIG. 34 is a perspective view illustrating another embodiment of
the invention, and shows an example in which an auxiliary light
emitting unit including a plurality of light emitting diodes is
provided in an empty space of the inclined block member.
Hereinafter, as shown in FIGS. 3 to 7, a base body member 10 of the
invention includes on one surface thereof a mounting surface 11 on
which inclined block members 20 are mounted. In the invention, the
mounting surface 11 is basically formed on the upper surface of the
base body member 10.
The inclined block members 20 each provided with an inclined
surface are mounted on the mounting surface 11 of the base body
member 10.
A plurality of light emitting diodes module members 30 are mounted
on the inclined surface of each of the inclined block members 20,
and the light emitting diode module member 30 includes a light
emitting diode chip (LED chip) that is mounted to a metal printed
circuit board (PCB) and supplied with electric power to emit light,
and a lens unit that focuses light emitted from the light emitting
diode chip.
The lens unit of the light emitting diode module member 30
concentrates the light emitted from the light emitting diode chip
and thus adjusts the emission range of light. The lenses are sorted
into a 12.degree. lens, a 25.degree. lens, a 30.degree. lens, and a
45.degree. lens depending on the light emission range, which is
well known in the art and thus a detailed description thereof will
be omitted.
That is, the light emitting diode module members 30 are used
separately according to the lens unit which adjusts the emission
range of light at an arbitrary angle.
Meanwhile, the base body member 10, as shown in FIGS. 3 and 4, may
be formed to have the flat mounting surface 11 having a rectangular
or circular shape, and the inclined block members 20 may be mounted
on the mounting surface 11.
The base body member 10 has the flat mounting surface 11 having a
rectangular or circular shape, as shown in FIGS. 5 to 7, and it may
be provided with a side portion 12 protruding along the outer
circumference of the mounting surface 11.
Furthermore, the side portion 12 may be formed to protrude
perpendicularly along the outer circumference of the mounting
surface 11, with an arbitrary height, as shown in FIGS. 5 to 7 and
FIG. 8. In addition, as shown in FIG. 9, the side portion 12 may
protrude so as to be inclined at an obtuse angle (.alpha.) relative
to the flat mounting surface 11 of the base body member 10, and
have an inclined mounting surface 11b on the inside of the side
portions 12 and a flat mounting surface 11a between the side
portions 12.
The mounting surface 11 of the base body member 10 includes the
flat mounting surface 11a and the inclined mounting surfaces 11b
provided at both sides of the flat mounting surface 11a.
Additionally, the base body member 10, as shown in FIG. 10, may be
provided with the flat mounting surfaces 11a between the side
portions 12 vertically erected and the inclined mounting surface
11b provided at both sides of each of the flat mounting surfaces
11a. The flat mounting surface 11a and the inclined mounting
surface 11b may be provided to form a pair that is symmetric with
respect to the center of the base body member.
The base body member 10, as shown in FIGS. 7 to 11, preferably has
at the lower part thereof a heat sink 13 for increasing a heat
exchange area in order to dissipate heat.
The heat sink 13 includes a plurality of radiation fins or
radiation pieces protruding from the lower surface at predetermined
intervals so that a heat exchange area is increased to dissipate
the heat generated from the light emitting diode modules.
The heat sink 13 is provided to dissipate heat generated from the
light emitting diode chip when the light emitting diode modules
emit light, and heat generated from a driver (not shown) when
converting an electric power voltage supplied to the light emitting
diode chip into a voltage for the chip. In this way, the heat sink
13 prevents the light emitting diode chip from being out of order
due to heat.
Meanwhile, the inclined block member 20 may be formed to have a
single inclined surface or a plurality of inclined surfaces, as
shown in FIGS. 12 and 13.
FIG. 12 shows an example of the inclined block member 20 having a
single inclined surface. In FIG. 12, (a) shows a 5.degree. block 21
having a 5.degree. inclined surface, (b) shows a 10.degree. block
22 having a 10.degree. inclined surface, (c) shows a 15.degree.
block 23 having a 15.degree. inclined surface, and (d) shows a
40.degree. block 25 having a 40.degree. inclined surface.
The inclined block members 20 with a small inclination angle of 0
to 20.degree., as shown in (a) to (c) of FIG. 12, are mainly
mounted between the flat inclination surface 11a and the inclined
mounting surface 11b.
The inclined block members 20 with a large inclination angle that
is equal to or greater than 30.degree., as shown in (d) of FIG. 12,
are mainly mounted closely on the end surface of the inclination
surface 11 or the inner surface of the side portion 12 vertically
erected.
FIG. 13 shows examples of the inclined block member 20 with a
plurality of inclined surfaces. In FIG. 13, (a) and (b) show
examples of the inclined block member 20 with a pair of inclined
surfaces in symmetry. In FIG. 13, (a) shows the block member mainly
used in close contact with the inner surface of the side portion 12
on the base body member 10 provided with the side portion 12
vertically erected, and (b) shows the block member mounted to the
inner inclined mounting surface 11b of the side portion 12 that is
inclined at an arbitrary angle in the base body member 10.
In FIG. 13, (c) and (d) show examples of the inclined block members
20 provided with two inclined surfaces having different inclination
angles. In FIG. 13, (c) shows the block member mainly used in close
contact with the inner surface of the side portion 12 on the base
body member 10 provided with the side portion 12 vertically
erected, and (d) shows the block member mounted on the inner
inclined mounting surface 11b of the side portion 12 that is
inclined at an arbitrary angle in the base body member 10.
The inclined block member 20, as shown in (d) of FIG. 12, is
preferably provided with hollow portions 20a to decrease the weight
thereof, thereby reducing the weight of a lighting apparatus
fabricated according to the invention.
The inclined block member 20, as shown in FIGS. 14 and 15, is
mounted detachably to the mounting surface 11 of the base body
member 10 and thus it can be replaced with another on the same base
body member 10.
In addition, a pair of a mounting protrusion 20b and a connection
groove 20c are provided on the mounting surface 11 of the base body
member 10 and in the lower surface of the inclined block member 20,
respectively, and are fitted to each other. In this way, the
inclined block member is connected detachably to the mounting
surface 11.
As shown in FIG. 14, the mounting protrusion 20b may protrude from
the mounting surface of the base body member at the mounting
position of the inclined block member 20, and the connection groove
20c may be formed in the lower surface of the inclined block member
20 at a position corresponding to the mounting protrusion 20b.
Furthermore, as shown in FIG. 15, the mounting protrusion 20b may
protrude from the lower surface of the inclined block member 20,
and the connection groove 20c may be formed in the mounting surface
of the base body member at a position corresponding to the mounting
protrusion 20b.
That is, the inclined block members 20 are sorted according to the
inclination angle of the inclined surface and a plurality of light
emitting diode modules mounted on the inclined surface. If
necessary, the inclined block members may be replaced with others
on the mounting surface 11 of the base body member 10, and thus
various light distributions can be formed by a plurality of
combinations of the light emitting diode modules mounted on the
mounting surface 11.
Meanwhile, the embodiments of the invention will be described
below, which are applied to a floodlight. However, the invention is
not limited thereto, rather it may apply to any lighting apparatus
designed to have a proper light distribution pattern for
efficiently lighting an object to be lighted.
FIG. 16 is a schematic view illustrating light distribution types
typically used in a floodlight, that is, a narrow light
distribution type, an intermediate light distribution type, and a
wide light distribution type.
In FIG. 16, (a) shows a narrow light distribution type having a
small width and a long length, (b) shows an intermediate light
distribution type having a width larger than the narrow light
distribution type, and (c) shows a wide light distribution type
having a width larger than the intermediate light distribution
type. The embodiments for forming the above three types of light
distributions are as follows.
Here, the inclined block members 20 used in the following
embodiments includes a 5.degree. block 21 that is inclined at an
angle of 5.degree., a 10.degree. block 22 that is inclined at an
angle of 10.degree., a 15.degree. block 23 that is inclined at an
angle of 15.degree., a 30.degree. block that is inclined at an
angle of 30.degree., and a 40.degree. block 25 that is inclined at
an angle of 40.degree. with respect to the flat mounting surface
11.
The light emitting diode module member 30 used in the following
embodiments includes a first light emitting diode module 31
provided with a 12.degree. lens and a second light emitting diode
module 32 provided with a 30.degree. lens.
First Embodiment
The first embodiment forms a narrow light distribution type using
the base body member 10 having a rectangular box shape with its
upper surface being opened, which includes the rectangular mounting
surface 11 and the side portion 12 that protrudes vertically from
the edge of the mounting surface 11 with a predetermined height, as
shown in FIG. 17.
In this embodiment, the lengthwise direction of the rectangular
mounting surface 11 is the horizontal direction and the widthwise
direction thereof is the vertical direction.
The inclined block members 20 in the first embodiment, as shown in
FIG. 18, are arranged in two rows in the lengthwise direction of
the mounting surface 11, and the first row includes two 5.degree.
blocks 21 mounted at the center of the mounting surface 11 so as to
face each other in the lengthwise direction thereof and a pair of
40.degree. blocks 25 mounted at the outsides of the 5.degree.
blocks 21 so as to face each other in the widthwise direction.
The second row includes a pair of 10.degree. blocks 22 mounted at
the center of the mounting surface 11 so as to face each other in
the lengthwise direction and a pair of 30.degree. blocks 24 mounted
at the outsides of the 10.degree. blocks 22 so as to face each
other in the lengthwise direction.
Furthermore, five first light emitting diode modules 31 each having
a 12.degree. lens are mounted on each of the inclined block members
20.
This embodiment forms the light distribution type shown in (a) of
FIG. 16, which has a narrow width and a long length as shown in
FIG. 19.
Second Embodiment
The second embodiment forms an intermediate light distribution type
using the base body member 10 having a rectangular box shape with
its upper surface being opened, which includes the rectangular
mounting surface 11 and the side portion 12 that protrudes
vertically from the edge of the mounting surface 11 with a
predetermined height, as shown in FIG. 20.
In this embodiment, the lengthwise direction of the rectangular
mounting surface 11 is the horizontal direction and the widthwise
direction thereof is the vertical direction.
The inclined block members 20 in the second embodiment, as shown in
FIG. 20, include two pairs of 5.degree. blocks 21 mounted at the
center of the mounting surface 11 so as to face each other in the
widthwise direction thereof and a pair of 30.degree. blocks 24
mounted at the outsides of the 5.degree. blocks 21 so as to face
each other in the lengthwise direction of the mounting surface
11.
Five second light emitting diode modules 32 each provided with a
30.degree. lens are mounted to each of the 5.degree. blocks 21, and
upper and lower rows of six light emitting diode module members 30
are mounted to the 30.degree. blocks 24. The upper row 32a include
six second light emitting diode modules 32 each provided with a
30.degree. lens, and the lower row 31a include six first light
emitting diode modules 31 each provided with a 12.degree. lens.
This embodiment forms the intermediate light distribution type
shown in (b) of FIG. 16, which has a width larger than the first
embodiment, as shown in FIG. 22.
Third Embodiment
The third embodiment forms an intermediate light distribution type
using the base body member 10 having a rectangular box shape with
its upper surface being opened, which includes the rectangular
mounting surface 11 and the side portion 12 that protrudes
vertically from the edge of the mounting surface 11 with a
predetermined height, as shown in FIG. 23.
In this embodiment, the lengthwise direction of the rectangular
mounting surface 11 is the horizontal direction and the widthwise
direction thereof is the vertical direction.
The inclined block members 20 in the third embodiment, as shown in
FIG. 24, include two pairs of 15.degree. blocks 23 mounted at the
center of the mounting surface 11 so as to face each other in the
widthwise direction thereof and a pair of 30.degree. blocks 24
mounted at the outsides of the 15.degree. blocks 23 so as to face
each other in the lengthwise direction of the mounting surface
11.
Five second light emitting diode modules 32 each provided with a
30.degree. lens are mounted to each of the 15.degree. blocks 23,
and upper and lower rows of six light emitting diode module members
30 are mounted to the 30.degree. blocks 24. The upper row 32a
include six second light emitting diode modules 32 each provided
with a 30.degree. lens, and the lower row 31a include six first
light emitting diode modules 31 each provided with a 12.degree.
lens.
This embodiment forms the wide light distribution type shown in (c)
of FIG. 16, which has a width larger than the second embodiment, as
shown in FIG. 25.
Meanwhile, in the following fourth to sixth embodiments, the base
body member 10, as shown in FIGS. 26 and 27, is formed in a
rectangular box shape having the mounting surface 11 of a
rectangular shape and the side portion 12 protruding vertically
from the edge of the mounting surface 11 at a predetermined height,
with an upper surface thereof opened. They relate to floodlights
which use the base body member 10 in which both side portions 12 in
the lengthwise direction thereof are symmetrically inclined, which
are capable of combining the inclined block members 20 on one base
body member 10 to various light distribution types used in the
flood light, such as the narrow light distribution, the
intermediate light distribution type, and the wide light
distribution type.
The two side portions 12a in the lengthwise direction are inclined
basically at 35.degree. relative to a line extending from the flat
mounting surface 11a of the base body member 10.
Further, the mounting surface 11 to which the inclined block
members 20 are mounted is provided inside the base body member 10.
The mounting surface 11 includes inclined mounting surfaces 11a on
the inner surfaces of the side portions 12a in the lengthwise
direction, which are inclined at the same angle as the side
portions 12a in the lengthwise direction, and a flat mounting
surface 11a provided between the inclined mounting surfaces
11b.
In addition, a transparent panel member 40 is preferably provided
on the upper opened part of the base body member 10 for covering it
to protect the light emitting diode module members 30, and to
prevent a foreign substance from getting thereinto.
The transparent panel member 40 is made of glass, or transparent or
opaque synthetic resin to transmit light emitted from the light
emitting diode module members 30.
A first cover connection portion 14 having fastening holes 14a for
bolt fastening at both sides of the upper parts thereof is provided
in the side portion 12 of the base body member 10, and a second
cover connection part 41 having bolt fastening holes 41a for bolt
fastening, which correspond to the fastening holes 14a is provided
in the transparent panel 40.
The transparent panel member 40 is connected to the upper part of
the base body member 10 and then the first and second connection
parts 14 and 41 are aligned to be fastened with bolts 42. When
releasing the fastening bolt, they are separated from each
other.
The transparent panel member 40 may be connected detachably to the
base body member 10 by other ways, except for the aforementioned
way. If necessary, it may be separated to open the inside of the
base body member 10 for replacing and monitoring the light emitting
diode modules 30.
A hit sink 13 for dissipating heat is provided on the outer side of
the base body member 10.
A hinge part 16, which is hinged rotatably to a fixing member 15
that is to be fixed at an arbitrary position, is provided on the
lower part of the base body member 10 so that a mounting angle can
be adjusted.
Fourth Embodiment
This embodiment is an example of a floodlight using the base body
member 10 in which two side portions 12a in the lengthwise
direction are inclined 35.degree., as shown in FIG. 28, thereby
forming the narrow light distribution type shown in (a) of FIG.
16.
Further, the inclined mounting surfaces 11b on which the inclined
block members 20 are mounted are provided on the inner surfaces of
two side portions 12a of the base body member 10 in the lengthwise
direction.
The flat mounting surface 11a is provided between the inclined
mounting surfaces 11b inside the base body member 10.
Two symmetrical pairs of 5.degree. blocks 21 are mounted on the
inclined mounting surfaces 11b. One pair of 5.degree. blocks 21 are
mounted such that the inclination angle thereof is increased
5.degree. and the other pair of 5.degree. blocks 21 are mounted
such that the inclination angle thereof is decreased 5.degree.,
relative to the reference line of the inclined mounting surface
11b.
That is, one pair of 5.degree. blocks 21 is mounted such that the
higher part faces the upper part in the inclined mounting surface
11b. Therefore, the angle between a straight line extending from
the flat mounting surface 11a and the reference line is increased
5.degree.. The other pair of 5 blocks is mounted such that the
higher part faces the lower part in the inclined mounting surface
11a. Therefore, the angle between a straight line extending from
the flat mounting surface 11a and the reference line is decreased
5.degree..
Here, two pairs of 10.degree. blocks 22 are mounted on the flat
mounting surface 11a such that the inclined surfaces thereof face
each other in the lengthwise direction.
Five first light emitting diode modules 31 each provided with a
12.degree. lens are provided on each of the inclined block members
20, that is, each of the two pairs of 5.degree. blocks 21 and the
two pairs of 10.degree. blocks 22.
This embodiment forms the narrow light distribution type shown in
(a) of FIG. 16, which has a narrow width and a long length, as
shown in FIG. 29.
Fifth Embodiment
This embodiment is an example of a floodlight using the base body
member 10 in which two side portions 12a in the lengthwise
direction are inclined 35.degree., as shown in FIG. 30, thereby
forming the intermediate light distribution type shown in (b) of
FIG. 16.
Further, the inclined mounting surfaces 11b on which the inclined
block members 20 are mounted are provided on the inner surfaces of
two side portions 12a in the lengthwise direction inside the base
body member 10.
The flat mounting surface 11a is provided between the inclined
mounting surfaces 11b inside the base body member 10.
Two symmetrical pairs of 5.degree. blocks 21 are mounted on the
inclined mounting surfaces 11b such that the inclination angle
thereof is decreased 5.degree., relative to a reference line of the
inclined mounting surface 11b.
That is, the two pairs of 5.degree. blocks 21 are mounted such that
the higher part faces the lower part of the inclined mounting
surface 11b. Therefore, the angle between a straight line extending
from the flat mounting surface 11a and the reference line is
decreased 5.degree..
Two pairs of 5.degree. blocks are mounted on the flat mounting
surface 11a such that the inclined surfaces thereof face each other
in the vertical direction.
Five light emitting diode module members 30 are mounted on each of
the inclined block members 20, that is, eight 5.degree. blocks 21.
Among two pairs of 5.degree. blocks mounted to the inclined
mounting surfaces 11b, only the first light emitting diode modules
31a in the lowest row, that is, the range indicated by "A" in FIG.
30 each have a 12.degree. lens, and the second light emitting diode
modules 32 in the other range each have a 30.degree. lens.
This embodiment forms the intermediate light distribution type
shown in (b) of FIG. 16, which has a width smaller than the fourth
embodiment, as shown in FIG. 31.
Sixth Embodiment
This embodiment is an example of a floodlight using the base body
member 10 in which two side portions 12a in the lengthwise
direction are inclined 35.degree., as shown in FIG. 32, thereby
forming the wide light distribution type shown in (c) of FIG.
16.
The inclined mounting surfaces 11b on which the inclined block
members 20 are mounted are provided on the inner surfaces of two
side portions 12a in the lengthwise direction inside the base body
member 10.
The flat mounting surface 11a is provided between the inclined
mounting surfaces 11b inside the base body member 10.
Two symmetrical pairs of 5.degree. blocks 21 are mounted on the
inclined mounting surfaces 11b such that the inclination angle
thereof is decreased 5.degree., relative to a reference line of the
inclined mounting surface 11b.
That is, the two pairs of 5.degree. blocks 21 are mounted such that
the higher part faces the lower part of the inclined mounting
surface 11b. Therefore the angle between a straight line extending
from the flat mounting surface 11a and the reference line is
decreased 5.degree..
Two pairs of 15.degree. blocks are mounted on the flat mounting
surface 11a such that the inclined surfaces thereof face each other
in the vertical direction.
Five second light emitting diode modules 32 each provided with a
30.degree. lens are mounted on each of the inclined block members
20, that is, the two pairs of 5.degree. blocks 21 and the two pairs
of 15.degree. blocks 23.
This embodiment forms the wide light distribution type shown in (c)
of FIG. 16, which has a width larger than the fifth embodiment, as
shown in FIG. 33.
Meanwhile, an auxiliary light emitting unit 33 including a
plurality of light emitting modules 30 may be provided between the
inclined block members 20 on the mounting surface 11 of the base
body member 10, as shown in FIG. 34, in order to increase the
quantity of light.
As described above, according to the invention, it is possible to
easily obtain various light distributions required for the lighting
design by combining the inclined block members 20 and the light
emitting diode module members 30 that are mounted on the mounting
surfaces of the base body member 10.
In the above-described embodiments, the base body member 10 has a
rectangular shape that is suitable for forming light distribution
that is used mainly in a floodlight and replacing the inclined
block members 20.
The invention is not limit to the above-described embodiments and
various changes or modifications can be made without departing from
the scope of the invention, and it is evident that they are
included in the constitution of the invention.
The invention is used basically for a floodlight, as described
above, and it is clear that it can be used for various light
distributions.
* * * * *